一种基于斩波稳零运放的电流/频率转换器设计  

The Design of I/F Converter Based on Super Chopper-Stabilized Operational Amplifier

作　　者：李莺[1] 耿增建[1] 

机构地区：[1]西安微电子研究所,陕西西安710054

出　　处：《微电子学与计算机》2006年第3期82-84,共3页Microelectronics & Computer

摘　　要：I/F(电流/频率)转换电路本质上是一个电荷平衡式转换电路,利用电荷平衡法,输出脉冲频率与输入电流有精密的线性关系。文章介绍了一种基于高增益斩波自稳零运放的I/F转换器,使电路本身能够对零位和漂移进行自校正。经测试该转换器具有高精度、低漂移、良好的线性度及较宽的频率范围等优点,有着良好的市场前景。可广泛用于导航、雷达、遥控遥测、模拟信号传输、数据采集和通讯系统、现代导航系统等领域。Current/frequency（I/F） converter is a kind of charge balance circuit, by charge balance ,output frequency and input current has close linearity . This paper introduce a kind of converter based on Super Chopper-Stabilized Operational Amplifier, which can revise the zero offset of circuit. The testing result shows that the converter has excellent linearity and a wide frequency range so that it＇s application is promising. It can be widely used in fields of navigation, radar, telecontrol, analogue signal transmission, data collection and communication system.

关 键 词：低漂移 斩波稳霉 电荷平衡武 线性度 

分 类 号：TN722[电子电信—电路与系统]